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公开(公告)号：US20250011479A1
公开(公告)日：2025-01-09
申请号：US18751816
申请日：2024-06-24
Applicant: QINGDAO UNIVERSITY OF SCIENCE AND TECHNOLOGY
Inventor： Chunyu ZHANG , Yingnan ZHAO , Lihua NA , Heng LIU , Xuequan ZHANG
Abstract: Disclosed are an iron-based catalyst and its application catalytic diene polymerization. The iron-based catalyst provided by the present application includes iron-containing organic compounds, alkyl aluminum compounds and isocyanide-containing organic compounds, and the molar ratio between the iron element of the iron-containing organic compounds, the alkyl aluminum compounds and the isocyanide-containing organic compounds is 1:(5˜100):(0.5˜100). The iron-based catalyst system of the present application can initiate polymerization of diene with high activity at high temperature by using isocyanide-containing organic compounds as an electron donor and alkyl aluminum compounds as a co-catalyst.
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2.发明公开公开(公告)号：US20240279452A1
公开(公告)日：2024-08-22
申请号：US18648964
申请日：2024-04-29
Applicant: QINGDAO UNIVERSITY OF SCIENCE AND TECHNOLOGY
Inventor： Aihua HE , Chenguang LIU , Huafeng SHAO
IPC: C08L23/22 , C08F2/01 , C08F2/06 , C08F4/659 , C08F210/08
CPC classification number: C08L23/22 , C08F2/01 , C08F2/06 , C08F4/65912 , C08F210/08 , C08F2400/02 , C08F2800/20 , C08L2205/025 , C08L2205/035 , C08L2207/10
Abstract: Disclosed are a high temperature blasting resistance isotactic polybutene alloy and a preparation method thereof. The isotactic polybutene alloy of the present invention comprises 1-40% of isotactic polypropylene in parts by mass, 0.1-10% of a polypropylene-polybutene-1 block copolymer in parts by mass, 35-95.9% of isotactic polybutene-1 of a medium molecular weight in parts by mass, and 3-15% of isotactic polybutene-1 of a high molecular weight in parts by mass. The alloy material is prepared using a method of segmented polymerization of propylene polymerization, high hydrogen content butene polymerization and low hydrogen content butene polymerization. The prepared isotactic polybutene alloy has excellent high temperature blasting resistance and high temperature hydrostatic pressure, is high in vicat softening temperature, and is applicable to pressure pipes.
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3.发明授权公开(公告)号：US11987567B2
公开(公告)日：2024-05-21
申请号：US17899814
申请日：2022-08-31
Applicant: Qingdao University of Science and Technology
Inventor： Yingjie Zhao , Wenqi Qiu , Hui Liu , Zhenxiu Zhang , Jinyu Zhao
CPC classification number: C07D319/12 , B01J31/04 , B01J37/009 , B01J37/0236 , B01J37/031 , B01J37/04 , B01J37/06 , B01J2231/005 , B01J2531/002
Abstract: The present invention discloses a synthesis method of lactide by confinement effect catalysis of crystalline porous polymer material, wherein the method comprising: (I) synthesis of catalyst; (II) synthesis of lactide by confinement effect catalysis; and (III) purification of lactide. In the present invention, a yield of L-lactide by catalysis of L-lactic acid by crystalline polymers is as high as 85.6%, which is 10% higher than the yield of lactide by H-β molecular sieve reported in documents currently available; it is easy to prepare the crystalline porous polymer material catalyst, which is environmental friendly, has a high yield and is recyclable, for consecutive 7 times the catalysis yield is maintained to be higher than 70%, and catalysis yield conservation rate is far higher than catalysis effects of catalysts reported in documents currently available.
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公开(公告)号：US20230076982A1
公开(公告)日：2023-03-09
申请号：US18047314
申请日：2022-10-18
Applicant: QINGDAO UNIVERSITY OF SCIENCE AND TECHNOLOGY
Inventor： Jianming ZHANG , Yunxiao LIU , Yongxin DUAN , Lijuan ZHOU , Yunjie LU , Xinran LIU
IPC: C08F251/02 , C08L51/02
Abstract: A preparation method includes 1) dispersing cellulose nanocrystal in water and adjusting pH to 7; 2) adding carboxylate to the aqueous dispersion of the step 1), and stirring until uniform; and 3) adding a monomer and a ceric ammonium nitrate initiator to the system of the step 2), reacting for 0.5-3 h to obtain a precipitate, and subjecting the precipitate to suction filtration, washing, and drying to obtain the cellulose nanocrystal powder. By adding a small amount of carboxylate into a cellulose nanocrystal graft polymer modification system initiated by ceric ammonium nitrate, hydrolysis of cerium ions can be inhibited through complexation of the carboxylate to the cerium ions which play an initiating role in ceric ammonium nitrate, so that ceric ammonium nitrate can initiate the polymerization reaction under acid-free conditions, thereby achieving polymerization of polyvinyl acetate monomer on the surface of cellulose nanocrystals.
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5.发明申请公开(公告)号：US20220105183A1
公开(公告)日：2022-04-07
申请号：US17296166
申请日：2019-11-14
Applicant: Qingdao University of Science and Technology
Inventor： Xianfeng ZHOU , Zhibo LI , Xueluer MU
IPC: A61K41/00 , A61K49/22 , A61P35/00 , C07D209/10 , C07D405/08
Abstract: A micro-nano structure formed by self-assembling a compound represented by formula (I), an isomer thereof, a pharmaceutically acceptable salt, a hydrate or a solvate in an aqueous solution, a preparation method for the micro-nano structure, and use thereof are described. The micro-nano structure has the advantages of having high photothermal conversion efficiency, good photothermal stability, good photothermal effect and photodynamic effect, being easily degraded, and having high safety, and can be passively targeted to tumor sites, having a broad prospect in the diagnosis and treatment of cancers and skin diseases.
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Patent Agency Ranking
6.发明申请公开(公告)号：US20180201714A1
公开(公告)日：2018-07-19
申请号：US15743781
申请日：2016-11-15
Applicant: QINGDAO UNIVERSITY OF SCIENCE AND TECHNOLOGY , SHANDONG HUAJU POLYMER MATERIALS CO., LTD. , CHAMBROAD CHEMICAL INDUSTRY RESEARCH INSTITUTE CO., LTD.
Inventor： Aihua HE , Yunsheng MA , Huafeng SHAO , Gang YAO , Chenguang LIU , Bo LUAN , Riguo WANG
IPC: C08F236/06 , C08F236/08 , C08F2/01 , C08F2/02 , C08F2/42 , C08F4/642
Abstract: A method for industrial production of a butadiene-isoprene copolymer rubber having a trans-1,4-structure (TBIR) and an apparatus for implementing the method. The production method includes: pumping a predetermined amount of a butadiene and an isoprene into a polymerization reactor, and performing bulk polymerization in the presence of a catalyst to obtain TBIR; performing extrusion, devolatilization, granulation and drying on the produced TBIR, and then packaging the produced TBIR; and separating unreacted monomers by a recovery and separation device followed by separately refining the unreacted monomers, and then returning the unreacted monomers to a batching device or a storage tank. The production apparatus has a recovery and refining unit, a polymerization unit, a post-treatment unit and a utility unit. By the production apparatus and the production method industrial production of TBIR by bulk polymerization is realized.
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公开(公告)号：US20250001388A1
公开(公告)日：2025-01-02
申请号：US18827839
申请日：2024-09-08
Applicant: Qingdao University of Science and Technology
Inventor： Zhibo Li , Yuetao Liu , Na Zhao
Abstract: This disclosure belongs to the field of organic silicon polymer material preparation, particularly relating to a continuous production device for organophosphorus nitrile-catalyzed high-molecular-weight polysiloxane. It includes a reaction device with a horizontal configuration and dual-axis stirring, where the diameters of the dual axes decrease gradually from the feed port to the discharge outlet, and the corresponding nominal diameters of the paddles increase gradually from the feed port to the discharge outlet. The stirring shaft and paddles are hollow and can be externally heated or cooled. The dual-axis engagement provides mass transfer, heat transfer, and axial propelling force. This reaction device exhibits excellent mass transfer and heat transfer effects, resulting in uniform products with narrow molecular weight distribution and low volatile content. It is particularly suitable for the continuous production of high-viscosity, high-molecular-weight polysiloxanes catalyzed by organophosphorus nitrile. This production device can be adapted to various traditional chemical reaction equipment.
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8.发明公开公开(公告)号：US20230382828A1
公开(公告)日：2023-11-30
申请号：US17882045
申请日：2022-08-05
Applicant: Qingdao University of Science and Technology
Inventor： Peizhe CUI , Xin LI , Yinglong WANG , Zhaoyou ZHU , Kaiguang WANG , Jianguang QI , Limei ZHONG , Zhonghui ZHENG , Wenhui XU , Jianbo JIA , Deping DU
IPC: C07C7/04
Abstract: The present disclosure belongs to the technical field of chemical separation and purification, and in particular relates to a purification method and device for continuous distillation and separation of an ibuprofen intermediate raw material. The purification method comprises the following steps: carrying out a primary distillation on synthetic liquid to obtain a primary material and recovered 4-methyl-1-pentene, then carrying out a second-stage distillation on the primary material to obtain a second-stage material and a recovered crude toluene product; and carrying out a third-stage distillation on the second-stage material to obtain isobutyl benzene and a recovered crude n-butylbenzene product. Embodiment results show that the purification method provided by the present disclosure is high in product recovery rate and high in product purity, the purity of isobutyl benzene is up to 99.99 wt %, the recovery rate is up to 99.9 wt %, the impurity content is not higher than 50 ppm.
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公开(公告)号：US11808678B2
公开(公告)日：2023-11-07
申请号：US17715306
申请日：2022-04-07
Applicant: QINGDAO UNIVERSITY OF SCIENCE AND TECHNOLOGY
Inventor： Ping Fu , Junfei Wu , Siyang Wu , Yang Bai , Yuting Zhou , Guangxu Luan , Shuo Yin , Mingsai Zhang , Chenxu Wang
CPC classification number: G01N1/34 , G01N1/14 , G01N2001/1031 , G01N2001/1062
Abstract: A system for a deep-sea planktonic microorganism in-situ concentration, temperature maintaining and pressure maintaining sampling is provided and includes a sampling cylinder body with double layer structures, the sampling cylinder body is provided with a plug-shaped inner cavity, the plug-shaped inner cavity is provided with a transfer water outlet and a water inlet connected to a water inlet component, the plug-shaped inner cavity is connected to an end cover, the plug-shaped inner cavity is connected to a filter part, the sampling cylinder body is provided with a sampling water outlet, the sampling water outlet is respectively connected to a pressure maintaining device and a water outlet pipe, a temperature maintaining material layer and a temperature control component are connected between the double layer structures, and the temperature control component is electrically connected to a controller. The system can complete sampling on the premise of maintaining in-situ pressure of samples.
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公开(公告)号：US20230278824A1
公开(公告)日：2023-09-07
申请号：US17773809
申请日：2021-11-11
Applicant: Qingdao University of Science and Technology
Inventor： Shibao Wen , Yi Li , Chenxi Nie , Qin Du , Yuwei Feng , Luyao Wang , Shuo Wang , Leilei Yu
CPC classification number: B65H35/0033 , B65B51/067 , B65H35/0086 , B65H2404/10 , B65H2701/377
Abstract: For the defects that manual adhesive tape pasting is low in efficiency and high in cost, and it is difficult to automatically paste adhesive tapes at specified positions of inner and outer surfaces of an item according to a certain length through a handheld box sealer and an adhesive tape seal pasting mechanism, a cantilever type plane automatic adhesive tape pasting device is invented. A liftable two-stage telescopic cantilever adhesive tape pasting head structure, a roller type automatic adhesive tape feeding structure, an adjustable fixed-length cutting structure and a roller type pasting structure are adopted for the device to achieve the automatic adhesive tape pasting on inner and outer side planes of an item. After the item needing adhesive tape pasting is positioned, the pasting process is completely automatically conducted without manual participation, the labor intensity is reduced, the labor efficiency is improved.
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